Article
Engineering, Mechanical
T. Suresh Kumar, A. Nagesha, K. Mariappan, Manmath Kumar Dash
Summary: The beneficial influence of prior thermal ageing on the cyclic life of a type 316 LN austenitic stainless steel weld joint under thermomechanical fatigue was demonstrated through experiments. It was found that crack initiation mostly occurred in the heat affected zone in the as-welded joint, but shifted to the weld region following thermal ageing. Mechanisms governing life variations between the as-welded and aged joints were identified through detailed EBSD investigations.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Engineering, Mechanical
Yiming Zheng, Bingbing Li, Jingwei Zhao, Caiming Liu, Takamoto Itoh, Xu Chen
Summary: Investigating fatigue crack growth behavior is crucial for the design and safety evaluation of engineering structures. In this study, a new thermomechanical fatigue (TMF) crack propagation testing method was developed for variable temperature conditions, and its validity was proven through a series of tests.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2022)
Review
Crystallography
Jingwei Zhao, Feng Qiu, Chuangang Xu
Summary: The present paper reviews the research on the creep-thermomechanical fatigue (CTMF) behaviors of austenitic stainless steel for nuclear power plant pipelines. The stress response behavior, main damage mechanisms, and the effects of strain dwell type, dwell time, and temperature-strain phase angle on fatigue life behavior are systematically discussed. It is emphasized that CTMF is closer to the actual service condition of nuclear power plant pipes, and the traditional design method based on isothermal fatigue test data is not conservative. The research on CTMF behaviors of austenitic stainless steel for nuclear power plant is summarized and prospected.
Article
Materials Science, Multidisciplinary
Peng Yin, Wei Zhang, Yi Zhang, Qiaofa Yang, Fei Liang, Le Chang, Changyu Zhou
Summary: The thermomechanical fatigue behavior of 316L was investigated by analyzing internal stress and microstructural characteristics at different cyclic stages. The results showed that cyclic stress response exhibited initial hardening followed by cyclic softening at high strain amplitudes, while continuous cyclic hardening was observed as the strain amplitude decreased. Out-of-phase TMF always resulted in cyclic softening regardless of strain amplitude. The contributions of back stress and friction stress to initial and subsequent cyclic hardening were highlighted. The hardening of back stress and friction stress was attributed to dislocation proliferation at grain boundaries and increased dislocation interactions within grains, respectively. The cyclic softening of friction stress was attributed to the annihilation of dislocations due to cross-slip. The hysteresis curves revealed that the intensity of dynamic strain aging depended on strain amplitude, loading history, and phase angle, which were related to cross-slip occurrence, solute atom diffusion rate, point defect density, and vacancy mobility. The effect of loading conditions on fracture behavior, including crack sources, secondary cracks, creep cavities, and oxidation damage, was demonstrated.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
M. E. Harr, S. Daly, A. L. Pilchak
Summary: Research found that slip activity in Ti-6Al-2Sn-4Zr-2Mo was more rapid and accumulated more at lower temperatures exhibiting dwell sensitivity, compared to higher temperatures. Plasticity primarily occurred through long-range basal slip in colocated grains with a high basal Schmid factor at all temperatures.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Engineering, Mechanical
Carl Fischer, Christoph Schweizer
Summary: Detailed material investigations of the fatigue behavior of two cast aluminium alloys used in combustion engines are presented. The network of intermetallic phases of both aluminium alloys is characterized by means of detailed energy dispersive X-ray spectroscopy. The influence of the temperature dependence on the experimental results is discussed through tensile, low cycle, and thermomechanical fatigue tests performed over a wide temperature and loading range.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Materials Science, Multidisciplinary
Suqin Zhu, Han-Cheng Shih, Xiangyuan Cui, Chung-Yi Yu, Simon P. Ringer
Summary: The study focuses on solute clustering in Al alloys and demonstrates the effects of pre-ageing treatment on clustering states and alloy properties. Utilizing atom probe tomography and density functional theory simulations, the atomic-scale microstructure arising from the thermomechanical process is revealed.
Article
Engineering, Mechanical
Carl Fischer, Christoph Schweizer
Summary: This study investigates the influence of superimposed high cycle fatigue on the LCF/HCF and TMF/HCF lifetime of two cast aluminium alloys, AlSi7 and AlSi12. The observed lifetime reduction with increasing HCF amplitudes is explained by the evolution of short crack growth behavior observed under pure LCF and LCF/HCF loading.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Materials Science, Multidisciplinary
Kui Wang, Xinwei Wang, Cong Dang, Shaozhu Wang, Song Huang, Manping Liu, Jingfeng Wang
Summary: Ultrahigh-strength Mg-9.2Gd-4.4Y-1.0Zn-0.8Mn (wt%) alloys were produced through isothermal ageing, resulting in a microstructure characterized by bimodal a-Mg grains and prismatic b' and basal g' phases precipitated during ageing. The peak-aged alloys exhibited the highest tensile strength, with satisfactory ductility, due to dense number distribution co-precipitation that increased critical resolved shear stresses and inhibited microcrack nucleation and propagation. These findings have significant implications for high-strength Mg-Gd-Y-Zn alloys in practical applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Mechanical
R. Kumar, S. Sanyal, J. Bhagyaraj, E. Hari Krishna, S. Mukherjee, K. Prasad, S. Mandal
Summary: This study investigates the thermomechanical fatigue (TMF) behavior of Timetal 834 alloy under different loading conditions. The results show that the alloy exhibits different cyclic hardening and softening responses at different strain amplitudes. The strain amplitude and phase angle have significant effects on the TMF life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Nanoscience & Nanotechnology
T. Suresh Kumar, Manmath Kumar Dash, A. Nagesha
Summary: This investigation focused on the deformation behavior and damage development of a type 316 LN austenitic stainless steel weld joint under isothermal low cycle fatigue (IF) and thermomechanical fatigue (TMF). The cyclic stress response (CSR) of the joint was influenced by dynamic strain aging (DSA) and was observed to be higher under TMF compared to IF cycling. The difference in fatigue life under TMF and IF was explained by the development of deformation and damage through microscopy studies. The cyclic plastic deformation and damage occurred independently in the base metal and weld metal parts of the joint, competing to cause failure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Pengjie Wang, Xiang Ji, Qiyuan Chen, Zhenyu Liu
Summary: This study investigated the interactions between different grain boundaries and twin boundaries with persistent slip bands, finding that triple junctions of grain boundaries are preferential locations for fatigue crack initiation, while twin boundaries have the best fatigue cracking resistance.
Article
Engineering, Mechanical
Hugo Warner, Jinghao Xu, Guocai Chai, Johan Moverare, Mattias Calmunger
Summary: The study found that coherent Cu-precipitates and incoherent Nbcarbides in Sanicro 25 hinder dislocation motion, increase hardening, and improve high temperature properties, while sparsely placed intergranular Cr- and Nb-carbides in Esshete 1250 make it susceptible to creep damage and intergranular crack propagation. Dynamic recrystallization of the plastic zone at the crack tip seemed to affect crack propagation of Sanicro 25 by providing an energetically privileged path.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Materials Science, Multidisciplinary
Ziyao Ma, Chunhui Liu, Lingzhi Xu, Minghui Huang, Youliang Yang, Yongqian Xu, Bolin Ma, Lihua Zhan
Summary: This study systematically investigated the pre-strain-dependency of the creep age behavior and found that pre-straining significantly enhances the ageing strengthening and improves the formability of the alloy. The microstructural changes, including the dislocations and precipitates, induced by pre-strain were identified as the causes for these improvements.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Mingxian Zhang, Chenxin Zhang, Huanchun Wu, Bin Yang
Summary: Grain boundary engineering treatment can optimize the grain boundary character distribution of 316L austenitic stainless steel and improve corrosion fatigue life. Under specific treatment conditions, a high proportion of special boundaries and interrupted network of high-angle grain boundaries can be obtained.
FRONTIERS IN MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jinghao Xu, Hakan Brodin, Ru Lin Peng, Vladimir Luzin, Johan Moverare
Summary: This study systematically investigates the microstructural evolution of the laser-powder bed fused (L-PBF) nickel-base superalloy CM247LC during post-processing heat treatment. The results show that recrystallization barely occurs below the gamma' solvus temperature, while it is introduced above the solvus temperature. By considering the grain boundary migration mechanisms and supported by experimental observations, the sluggish recrystallization behavior of this alloy has been understood.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Cheng-Han Yu, Ru Lin Peng, Tung Lik Lee, Vladimir Luzin, Jan-Erik Lundgren, Johan Moverare
Summary: This study investigates the mechanical behaviours of LPBF Ni-based superalloys and finds that the elongated grain structure and characteristic crystallographic texture influence the anisotropic tensile behaviours. The vertical loading direction exhibits a more pronounced anisotropic effect and better creep performance.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Henrik Kjellsson, Arun Ramanathan Balachandramurthi, Johan Moverare, Thomas Hansson
Summary: The microstructure and mechanical properties of additively manufactured (AM) parts differ from that of cast and wrought counterparts. This study examined the fatigue behavior of electron beam powder bed fusion (EB-PBF) fabricated Alloy 718 after different heat treatment routes. The results showed that the fatigue life was influenced by the loading direction and strain amplitude.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Article
Engineering, Mechanical
Stefan B. Lindstrom, Johan Moverare, Daniel Leidermark, Hans Ansell, Zlatan Kapidzic
Summary: The study adapts the OSR incremental fatigue damage model for high-cycle fatigue in specimens with stress-raisers in AA7050-T7, showing good agreement across different conditions. By integrating fatigue life for an aircraft load spectrum, the predictive capability of the model is demonstrated.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Materials Science, Multidisciplinary
Jinghao Xu, Paraskevas Kontis, Ru Lin Peng, Johan Moverare
Summary: This study investigates the additive manufacturability of nickel-based superalloys for laser powder bed fusion (LPBF) technologies by considering the in-process cracking mechanisms. A two-parameter-based model, called heat resistance and deformation resistance (HR-DR) model, is proposed to predict the cracking susceptibility of nickel-based superalloys during LPBF. The model is validated through LPBF experiments and compared with reported data in the LPBF superalloys community. The model provides insights into the influence of alloying elements and gamma' precipitates on the additive manufacturability and offers a pathway for designing new solid solutioning and gamma' strengthened nickel-based superalloys for LPBF applications.
Article
Engineering, Mechanical
Frans Palmert, David Gustafsson, Per Almroth, Henrik Petersson, Mikael Segersall, Johan Moverare
Summary: This article focuses on the prediction of fatigue life of single crystal gas turbine blades, particularly the uncertainty of rapid crystallographic crack growth along the close-packed planes. A criterion is proposed to predict the transition from mode I to crystallographic crack growth, which is essential for accurately predicting the number of cycles from crack initiation to the onset of crystallographic crack growth. The proposed criterion is calibrated through various tests representative of gas turbine blades, including isothermal fatigue crack growth tests and thermomechanical fatigue crack growth tests with hold times and pre-test aging.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Ahmed Azeez, Robert Eriksson, Viktor Norman, Daniel Leidermark, Johan Moverare
Summary: Exploring crack growth behavior is crucial for accurate fatigue life predictions. In this study, cracked specimens were tested under strain-controlled out-of-phase thermomechanical fatigue conditions. Higher minimum temperature resulted in faster crack growth rates, while the addition of dwell times showed no significant effects. Crack closure was observed in all tests, and the addition of dwell times and change in minimum temperature had little to no effect on crack closure stresses.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Materials Science, Multidisciplinary
Freddy Leijon, Erik Johansson, Jun Lu, Bjorn Aling, Svein Skjervold, Johan Moverare
Summary: Grain refinement is essential for powder bed fusion additive manufacturing, and this study investigated the effects of different grain refiners on the grain size of Al-2 wt%Cu alloys. The results showed that Ti and Zr were the most effective grain refiners, while V and W had detrimental effects on grain refinement. Additionally, the addition of B also significantly contributed to grain refinement. The relationship between lattice parameters and grain size, as well as epitaxial strain/lattice match, was not clearly established.
MATERIALS & DESIGN
(2022)
Article
Materials Science, Multidisciplinary
Xiaoyu Sun, Pimin Zhang, Johan Moverare, Xin-Hai Li, Luqing Cui, Ru Lin Peng
Summary: The addition of Ta in MCrAlY coatings improves the oxidation resistance and reduces the depletion of γ' phase in the substrate. Thermodynamic simulations reveal the phase-transformation mechanism induced by initial interdiffusion and uncover the mechanism behind the improved resistance to γ' depletion by Ta addition.
MATERIALS & DESIGN
(2023)
Article
Metallurgy & Metallurgical Engineering
Camille Pauzon, Ahmad Raza, Imran Hanif, Sophie Dubiez-Le Goff, Johan Moverare, Eduard Hryha
Summary: Increasing the layer thickness from 30 to 60 μm in laser powder bed fusion can improve productivity, but it also leads to process instability, spatter generation, and powder degradation, especially for oxygen-sensitive alloys. This study investigates the effect of increasing layer thickness on Ti-6Al-4V spatter formation during LPBF, and finds that the spatters are covered with a uniform Ti-Al-based oxide layer and Al-rich oxide particulates, with a thickness about twice that of the virgin powder. The oxygen content in the spatters is about 60% higher compared to the virgin powder. The research suggests that increasing the layer thickness to 60 μm can reduce the total generation of spatters by approximately 40% while maintaining similar spatter characteristics and static tensile properties, allowing for an increased build rate without compromising process robustness.
Review
Materials Science, Multidisciplinary
Esmaeil Sadeghi, Paria Karimi, Reza Esmaeilizadeh, Filippo Berto, Shuai Shao, Johan Moverare, Ehsan Toyserkani, Nima Shamsaei
Summary: This paper comprehensively reviews the fundamentals and recent advances in the PBF-built Alloy 718 parts with improved fatigue life, including the influence of thermal and mechanical post-treatment, mechanisms of fatigue crack initiation and growth, thermo-mechanical fatigue, dwell-time fatigue, as well as fracture behavior in different loading conditions and environments considering anisotropic characteristics of the material. An unbiased review of the literature provides an understanding of the advanced and outstanding achievements in the field that assure further research. An evaluation of the status of the field, the gaps in the theoretical understanding, and the fundamental needs for the sustainable development of PBF-built Alloy 718 with enhanced fatigue life in specific applications are also provided.
PROGRESS IN MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Freddy Leijon, Johan Moverare
Summary: The importance of recycling and additive manufacturing (AM) is growing, but there has been limited focus on developing recyclable AM alloys compatible with larger scrap loops of aluminum alloys. This study examines the printability of AlMgSi alloys in the range of 0-30 wt% Mg and 0-4 wt% Si using a high-throughput method. Results show that AlMgSi alloys can be printed in two composition ranges: Si + Mg < 0.7 wt% or Si + 2/3 Mg > 4 wt% when Mg < 3 wt% and Si > 3 wt%. Increasing Mg and Si content affects the grain structure and hardness of the alloys.
Article
Engineering, Mechanical
Stefan B. Lindstrom, Johan Moverare, Jinghao Xu, Daniel Leidermark, Robert Eriksson, Hans Ansell, Zlatan Kapidzic
Summary: The study employs the Ottosen-Stenstrom-Ristinmaa (OSR) incremental fatigue damage model for assessing the fatigue life of integral airframes made from 7050-T7451 aluminum plates. Validation is done through variable-amplitude high-cycle fatigue experiments conducted on circumferentially notched axisymmetric specimens and a geometry resembling an aircraft fuselage frame with flanges, stiffeners, and web panels. The paper also discusses the modification of OSR model parameters to account for surface roughness and acceptable failure probability.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Engineering, Mechanical
Luqing Cui, Dunyong Deng, Shuang Jiang, Ru Lin Peng, Tongzheng Xin, Honghong Zhang, Zoltan Hegedues, Ulrich Lienert, Weifeng He, Johan Moverare
Summary: This study reveals the mechanisms underlying the anisotropic ductility of AM alloys and provides insights into strategies for enhancing their performance.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Metallurgy & Metallurgical Engineering
Pavel Romanov, Arvid Jahedi, Anders Backstrom, Bahram Moshfegh, Ivo Kubena, Mattias Calmunger
Summary: This study aims to achieve a gradient microstructure on two 15 mm-thick steel plates by controlling the cooling process. The mechanical properties of the materials are studied through microstructure observations and mechanical tests, and compared with simulation results.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Miloslav Kepka, Miloslav Kepka Jr, Radovan Minich
Summary: This paper focuses on the fatigue life evaluation of the bodywork of a new articulated electric (battery) bus. The findings resulted in recommendations to improve the operational reliability of a particular vehicle and provided challenges for future research.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
T. Dusautoir, B. Berthel, S. Fouvry, P. Matzen, K-D. Meck
Summary: This study investigates the impact of post-processing treatments on the fatigue limit of additive manufactured Ti-6Al-4V under stress gradients, with a focus on surface integrity.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Zhuofan Xia, Di Wu, Xiaochen Zhang, Jianqiu Wang, En -Hou Han
Summary: The study reveals the surface-initiated rolling contact fatigue (RCF) failure mechanism under heavy load and initial high roughness surface. The results indicate that precursor of collapsed morphology and nanocrystalline layer are the main factors causing lower RCF life with high roughness compared to low roughness surfaces. The spalling failure initiating from low roughness surface under heavy load is strongly dependent on surface plastic deformation.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Daniel Gren, Knut Andreas Meyer
Summary: Rolling contact loading can cause plastic deformation and fatigue cracks. Current rail standards do not consider the effect of plasticity on mechanical behavior. This study proposes a new method for evaluating the fatigue life of deformed material and finds that superimposed compressive axial loads can increase fatigue life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
R. Kumar, S. Sanyal, J. Bhagyaraj, E. Hari Krishna, S. Mukherjee, K. Prasad, S. Mandal
Summary: This study investigates the thermomechanical fatigue (TMF) behavior of Timetal 834 alloy under different loading conditions. The results show that the alloy exhibits different cyclic hardening and softening responses at different strain amplitudes. The strain amplitude and phase angle have significant effects on the TMF life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Kai Donnerbauer, Tobias Bill, Peter Starke, Ruth Acosta, Bharath Yerrapa, Christian Boller, Klaus Heckmann, Frank Walther
Summary: Given the aging of nuclear power plants, it is important to develop methods for evaluating the integrity of components and structures in nuclear engineering. Suitable nondestructive testing methods can detect material degradation and determine its fatigue life. This study utilized various NDT parameters and scanning electron microscopic methods to explore the relationship between microstructure evolution and NDT data.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Liuyong He, Jiang Zheng, Tianjiao Li, Houkun Zhou, Lihong Xia, Bin Jiang
Summary: This study quantitatively analyzed the effects of precipitates on the deformation mode, cracking mode, and mechanical behavior of WE54 magnesium alloy during low-cycle fatigue. It was found that precipitates promoted the activation of dislocation slip and suppressed the activation of twinning, affecting the cracking mode and mechanical behavior.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Xiangkang Zeng, Conghui Zhang, Wenguang Zhu, Mingliang Zhu, Tongguang Zhai, Xiaomei He, Kangkai Song, Zhuohang Xie
Summary: The cyclic deformation behaviors and damage mechanisms of pure Zr were investigated. The cyclic stress response was mainly influenced by substructure evolutions. Prismatic < a > dislocation slip was identified as the dominant deformation mechanism. Fatigue damage was not only influenced by the initial texture, but also other factors.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Jingyu Yang, Bingbing Li, Yiming Zheng, Gang Chen, Xu Chen
Summary: Heat treatment is used to improve the low-cycle fatigue performance of additive manufactured 316LN stainless steel. The heat-treated material demonstrates initially cyclic hardening followed by softening behavior, and shows a stronger resistance to crack propagation compared to the as-built material, resulting in a longer fatigue life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Lang Zou, Dongfang Zeng, Xiong Chen, Jun Li, Hai Zhao, Liantao Lu
Summary: This study investigates the competitive relationship between fretting fatigue and plain fatigue in press-fitted railway axles. By changing the depth of the stress relief groove, the plain fatigue limit and fretting fatigue strength were tested. Detailed information was gathered, and an evaluation methodology integrating finite element simulation and the Modified Wohler Curve Method was established. The study concludes that the optimal groove depth, which balances the anti-fatigue capabilities, depends on the number of test cycles.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Davide Leonetti, Koji Kinoshita, Yukina Takai, Alain Nussbaumer
Summary: This paper investigates the fatigue behavior of non-load-carrying transverse welded steel attachments, including fatigue crack monitoring and fracture surface analysis under constant and variable amplitude loading. A procedure is proposed to obtain a Markov transition matrix based on the measured strain signal and to randomly resample the stress history for variable amplitude fatigue tests.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Zhe Zhang, Bing Yang, Yuedong Wang, Shoune Xiao
Summary: This paper presents a method for designing fatigue life prediction models with small sample sizes by handling limited sample data. The method integrates the equivalent structural stress method with the maximum likelihood estimation method and adds reliability verification, resulting in enhanced goodness of fit, stability, and optimized sample quantity.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Cooper K. Hansen, Gary F. Whelan, Jacob D. Hochhalter
Summary: This paper presents a method to address the computational demand issue of computing FIPs using CPFEM by developing an interpretable machine learning model. Genetic programming is used to evolve interpretable expressions of FIPs from microstructure features, and these models can serve as efficient substitutes for CPFEM and be easily integrated into engineering workflows.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Luca Susmel
Summary: This paper discusses the problem of estimating notch fatigue limits using machine learning. The results show that machine learning is a promising approach for designing notched components against fatigue. The accuracy in estimating the fatigue limit can be increased by increasing the size and quality of the calibration dataset, as well as including additional input features.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Kefeng Gao, Guoqi Tan, Yanyan Liu, Qiang Wang, Qian Tang, Xuegang Wang, Qiqiang Duan, Zengqian Liu, Zhe Yi, Zhefeng Zhang
Summary: Bioinspired architectures have significant effects on material enhancement. This study investigates the fatigue properties of bioinspired ceramic-polymer composites and natural nacre, revealing the close relationship between architectural types, orientations, fatigue performance, and damage mechanisms.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
